Projects / Programmes source: ARIS

Three advances towards realistic description of strongly correlated electron transport

Research activity

Code Science Field Subfield
1.02.01  Natural sciences and mathematics  Physics  Physics of condesed matter 

Code Science Field
1.03  Natural Sciences  Physical sciences 
electronic transport, thermoelectric effect, dynamical mean-field theory, spin-orbit coupling, electron-phonon coupling
Evaluation (rules)
source: COBISS
Data for the last 5 years (citations for the last 10 years) on May 17, 2024; A3 for period 2018-2022
Data for ARIS tenders ( 04.04.2019 – Programme tender, archive )
Database Linked records Citations Pure citations Average pure citations
WoS  456  13,829  11,915  26.13 
Scopus  452  14,254  12,377  27.38 
Researchers (9)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  55411  PhD German Gabriel Blesio  Physics  Researcher  2021 - 2023  10 
2.  55655  PhD Banhi Chatterjee  Physics  Researcher  2021 - 2023 
3.  55283  PhD Luis Cort Barrada  Physics  Researcher  2021 - 2024 
4.  26458  PhD Jure Kokalj  Physics  Researcher  2020 - 2024  103 
5.  25625  PhD Jernej Mravlje  Physics  Head  2020 - 2024  131 
6.  01105  PhD Peter Prelovšek  Physics  Researcher  2020 - 2024  424 
7.  39208  PhD Lara Ulčakar  Physics  Researcher  2022 - 2024  24 
8.  29545  PhD Lev Vidmar  Physics  Researcher  2020 - 2024  136 
9.  23567  PhD Rok Žitko  Physics  Researcher  2020 - 2024  253 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,987 
The resistivity is a property of the solid that is very easily measured experimentally, but is very difficult to calculate theoretically. The project will develop methods for calculation of transport properties of correlated electron systems in a realistic setting and apply them to the case of transition metal oxides. Currently successful calculations of transport have been demonstrated in a simple model single-orbital setting using the dynamical mean-field theory (DMFT). There have been only a few attempts of realistic calculations in multi-orbital realistic setting and these resulted in values of resistivity that is at elevated temperature substantially smaller (factor of 5) than the measured one. This large discrepancy between the outcome of measurements and the results of the state-of-the-art realistic theoretical approach to the correlated electron systems is a fundamental puzzle and a strong motivation for the development of the better techniques. The project proposes a concrete strategy to improve the situation. It will implement three workpackages (WP) that explore two different paths to a more accurate calculation of the transport properties. WP1 will investigate if the the spin-orbit coupling that is important in transition-metal oxides, especially with 4d and 5d partially occupied shells. In WP1 the calculations of transport will be performed with proper account of this effect that is certainly important in ruthenates, which is one family of the compounds where the discrepancy between measured and calculated resistivity was documented. WP2 will explore the possibility that the non-local processes that are neglected in the DMFT method could play a role. The non-local processes are for instance the scattering on long wave-length spin fluctuations that become imporatant in proximity to magnetic transiitions, or the vertex corrections that have been shown recently by PI and investigators to play an important role. The project will implement extensions of DMFT that properly take into account the impact of such processes on electronic transport. WP3 will explore the role of vibrations of crystalline lattice, in particular close to the melting temperature and above for electron transport.
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